Letterboxes are much more _____in the UK

题型:选择题

问题:

Letterboxes are much more _____ in the UK than in the US, where most people have a mailbox instead. [ ]

A. common

B. normal

C. ordinary

D. usual

考点:形容词
题型:选择题

夏枯草()。

A.治阴虚火旺,潮热盗汗

B.性质滋腻,脾虚有湿咳嗽痰多者忌用

C.治疗痰火郁结之瘰疬、瘿瘤

D.治疗血热吐血、衄血、尿血

E.治疗黄疸,热淋,血淋

题型:选择题

汽车的导航系统是通过汽车和卫星之间传递信息来确定汽车所处的位置,在这个过程中是通过       来传递信息的;它的传播速度是          m/s.

题型:选择题

某小组利用如图装置制备氨气,并探究氨气的性质(部分仪器略去).请回答:

(1)实验室制备氨气的化学方程式为______.

(2)用B装置收集氨气时,请你选择氨气的进气口______(填“a”或“b”).

(3)B装置中烧瓶已收集满氨气,若使之形成喷泉,你的操作方法是______.若观察到装置B中的烧瓶内产生了红色喷泉,则说明氨气具有的性质是______.

(4)为防止环境污染,以下装置(盛放的液体均为水)可用于吸收多余氨气的是______(填序号).

(5)氨气在催化剂作用下并且加热时会被空气氧化,这是工业制硝酸的第一步反应,写出该反应的化学方程式______.

(6)氨气和氯气在常温下可快速反应生成氮气:2NH3+3Cl2=N2+6HCl.该反应可用于检验化工生产中氯气是否泄漏.因为氯气有少量泄漏,用氨气检验时会有明显现象,此过程中发生反应的Cl2和NH3的体积比范围为______.

题型:选择题

Cara Lang is 13. She lives in Boston, Massachusetts, in me U. S. Last Thursday, she didn't go to school. She went to work with her father instead. Every year, on the fourth Thursday in April, millions of young girls go work. This is Take Our Daughters to Work Day. The girls are between me ages of 9 and 15. They spend the day at work with an adult, usually a mother, father, aunt, or uncle. They go to offices, police stations, laboratories, and other places where their parents or other family members work. Next year, the day will include sons, too.

The Ms. Foundation, an organization for women, started the program about ten years ago. In the U.S., many women work outside the home. The Ms. Foundation wanted girls to find out about many different kinds of jobs. Then, when the girls grow up, they can choose a job they like.

Cara's father is a film director. Cara says, “It was very exciting for me to go to the studio with my dad. I saw a lot of people doing different jobs.” Many businesses have special activities for girls on this day. Last year, Cara went to work with her aunt at the University of Massachusetts. In the engineering department, the girls learned to build a bridge with toothpicks and Candy. In the chemistry department, they learned to use scales. They learned about many other kinds of jobs, too.

Right now, Cara does not know what job she will have when she grows up. But because of Take Our Daughters to Work Day, she knows she h2Ls many choices.

小题1:What is Cara's father?

A.An engineer.

B.An official.

C.A moviemaker.

D.A professor.小题2:According to the passage, Take our Daughters to work Day is ______.

A.on every Thursday in April

B.a holiday for girls of all ages

C.a day for girls to know about jobs

D.a day for girls to get a job easily小题3:On this special day, Cara has done all the following EXCEPT that ____.

A.she learned to use scales

B.she worked as an actress

C.she went to work with her aunt

D.she used toothpicks and Candy to build a bridge小题4:What is probably the best title for the passage?

A.Cara Lang, a Fortunate Girl

B.Take Our Daughters to Work Day

C.Children's Day and Work Day

D.Ms. Foundation, an Organization for Women

题型:选择题

负责骨基质形成和钙化的细胞为()。

A.成骨细胞

B.前成骨细胞

C.破骨细胞

D.骨细胞

E.骨衬里细胞

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